"cloth covering (usually of strong cotton or linen) for mattresses or pillows," 1640s, from tyke (modern tick) with the same meaning (mid-14c.), probably from Middle Dutch tike, from a West Germanic borrowing of Latin theca "case," from Greek theke "a case, box, cover, sheath" (see theco-).
例文
1. It keeps you ticking over,stops you being complacent.
これはあなたを遅くして、得意げになりません。
2.Very slowly he moved forward,the engine ticking over.
彼はゆっくりと前に進み、エンジンは低速で運転した。/
3.I just think it 's rude and it 's ticking me off.